Cylinder block resurfacing machine



Oct. 6, 1959 A. F.

CYLINDER BLOCK RESURFACING MACHINE Filed July 16, 1957 BEAULOYE Erin. 2,907,142

3 Sheets-Sheet l 63 6/ 44 64 f 55 FIG III I02 .5 W i 0 m 28 1 18' INVIENTORS ALFRED F. BEAULOYE,

1959 A. F. BEAULOYE ETAL 2,907,142

CYLINDER BLOCK RESURFACING MACHINE Filed July 16, 1957 3 Sheets-Sheet 2 INVENTORS ALFRED F. BEAULOYE GHENRY BEAULOYE f.

ATTORNEY Oct. 6, 1959 A. F. BEAULOYE ETAL 2,907,142

CYLINDER BLOCK RESURFACING MACHINE Filed July 16, 1957 3 Sheets-sheaf. 3

INVE'NTORS ALFRED F. BEAULOYE, GHENRY BEAULOYE Jr.

ATTORNEY United States Patent O 2,907,142 CYLINDER BLOCK RESURFACING MACHINE Alfred F. Beauloye, Lemon Grove, and Henry Beauloye, Jr., San Diego, Calif.

Application July 16, 1957, Serial No. 672,144

Claims. (Cl. 51-56) The present invention relates to surface grinders, and more particularly to a machine for grinding the surface of engine blocks and engine heads to provide a true gasket contact surface for said engine block or head.

One object of the invention is to provide a machine for accurately grinding the gasket contact surface of an internal combustion engine block or head and to provide a machine in which the workpiece will be supported in true parallel relation with its Work surface parallel with the grinding surface of the surface grinder.

Another object is to provide a surface grinding machine in which the workpiece such as an engine block can be supported on a surface plate and the grinding wheel and driving motor bodily moved horizontally above the workpiece in true parallel relation with the surface being ground and also the surface of the work plate.

Another object is to provide a surface grinding machine in which the grinding Wheel is reciprocated above the workpiece and is supported by a carriage movable in a horizontal plane by means of a hand wheel on the front of the machine arranged Within easy grasp of the operator.

Another object is to provide a surface grinding ma: chine in which the grinding wheel is supported by a bracket carried by the slide, and in which a tubl llar support is adjustably supported for vertical movement in said bracket upon the upper end of which is provided an' electric motor having its armature extending through said tubular support and attached to said grinding wheel below said bracket. Said motor being solely supported by said tubular support to eliminate the use of belts and other gearing.

Another object is to provide a surface grinding machine of the above-mentioned type in which the motor and grinding wheel carriedby said tubular support are adapted to be shifted vertically and adjusted by means of a rack and gear adjustment having an actuator presented to the same side of the machine upon which the operator stands so as to be within easy reach of said operator for making various adjustments.

Another object is to provide a surface grinding machine in which the slide for supporting the grinding wheel is reciprocably mounted for horizontal movement at a point below the surface plate and on each side of the base to provide a relatively stable structure, and which will eliminate vibration of the various parts of the machine.

Another objectis to provide a surface grinding machine in which the work is supported on a surface plate by suitable brackets bolted or otherwise affixed to said surface plate, whereby due to the parallel relation between the surface plate and the radial grinding surface of the grinding wheel a workpiece may have its surface ground along a true plane so that the same can receive a sealing gasket or the like.

Another object is to provide a surface grinding machine in which the grinding wheel supporting carriage includes a pair of side wall members which extend downwardly over the sides of the surface plate along opposed edges thereof where they are slidably guided by antifriction rollers arranged on opposite sides of a slide guide or rib.

Another object is to provide a surface grinding machine in which the grinding wheel is supported by a shaft connected to the armature shaft of an electric motor in such a manner that the grinding wheel may be locked' in any desired vertical position after the same has been adjusted by actuation of the manual control therefor.

Another object resides in the provision of a surface grinding machine which is compact and easily operated by a single operator and which will grind a true plane surface on a workpiece with a minimum number of adjustments and with a maximum degree of accuracy.

Other objects and advantages will become apparent during the course of the following description of the accompanying drawings, wherein:

Figure l is a side elevational view of the engine block surface grinder illustrating the manner in which the slide is reciprocably mounted on the base and showing the manual actuator therefor adapted to be controlled by an operator standing in front of the machine. The manual control for vertically adjusting the grinding Wheel is also illustrated as being presented to the operator on the same side of the machine.

Figure 2 is an end elevational view of the surface grinding machine further showing the manner in which the slide is supported on the base below the surface table and also illustrating the manner in which the motor, tubular support and grinding wheel are adaptedto be bodily shifted and adjusted vertically to present the peripheral surface of the grinding wheel to the workpiece.

Figure 3 is an enlargedfragmentary vertical crosssectional view taken on line 3-3 of Figure 2 and looking in the direction of the arrows to illustrate various structural details of the tubular support for the grinding wheel and electric motor.

Figure 4 is a horizontal cross-sectional view taken on line 4-4 of Figure 2 and looking in the direction of the arrows to illustrate the manner in which the manual control is connected to the tubular support for the grinding wheel through a rack and gear connection to permit quick and easy adjustment of said grinding Wheel.

Figure 5 is a vertical cross-sectional view taken on line 55 of Figure 1 and looking in the direction of the arrows to illustrate the rack and gear. drive for reciprocating the grinding wheel carriage, and.

Figure 6 is a vertical cross-sectional view taken on line 66 of Figure 1 and looking in the direction of the arrows to illustrate the manner in which the carriage is supported on anti-friction rollers engaging opposite sides of a guide rib.

In the drawings, and more particularly for the purpose of illustration, there is shown an embodiment of the'invention, and in Figures 1 and 2 the reference character 5 will generally be employed to designate the base and the reference character 6 will generally be employed to designate the grinding wheel carriage. Similarly, the reference character 7 will generally be employed to designatethe grinding wheel assembly 'adjustably supported by the carriage.

The base 5 includes a relatively heavy casting 8 having opposed flanges 9 at each end thereof to extend vertically in opposite directions. A pair of side guide plates 10 are secured to the flanges 9 by means of machine screws or the like 11. The guide plates 10 are provided with longitudinally extending guide ribs 12 (Figure 2).

The carriage 6 includes a pair of relatively heavy castings 13 connected at their upper ends by means of a bracket of arch-shape 14 which has its ends secured to; flanges 15 extending inwardly beneath the bracket 14 sothat said bracket may be secured thereto by threaded fasteners 111. The lower portions of the side plates 13 are provided with a series of spaced apart guide rollers 16 which are mounted on stub shafts 17 which extend through suitable openings 18 in the side plates and are held in place by nuts 19 secured to the threaded ends of said stub shafts 17. The rollers 16 are mounted in vertically spaced pairs adjacent the vertical edges of the side plates 13 (Fig. l), and said rollers 16 are supported by anti-friction bearings 21 interposed between an inner race member 22 and stub shaft '17 (Fig. 6}. Thus, it will be seen that the carriage 6 may be shifted horizontally with respect to the base and it is intended to provide a structure in which the carriage will move in true parallel relation with the base.

Supported on the base 5 is a surface plate 23 which may be bolted or otherwise affixed to the base 5 and to the upper flanges 9 thereof. The guide plates are not connected to the surface plate so that the slide guides 12 can be adjusted to a position in which they are in a plane parallel with the plane of the surface plate 23.

In Figure 5 there is shown control mechanism for the carriage 6 which is adapted to be manually operated and reciprocate the carriage to and fro with respect to the surface plate 23. As shown in Figure 5 a shaft 28 is journaled in a boss in one of the walls 13 of the carriage and said shaft 28 is provided with a gear 29 which is adapted to engage a rack 30 secured to one of the slide plates 10 directly above the slide guide 12.

The grinding wheel assembly 7 is adapted to be vertically adjusted, and mounted upon the bracket 14 is a cylindrical support 40 having a flange 41 which is adapted to be bolted by machine screws or the like 42 over a central opening in the bracket 14 as shown in Fig. 2. The cylindrical support 40 is provided with a bore 43 for slidably receiving a tubular support 44 (Fig. 4). The tubular support 44 is provided with a radial slot for receiving a rack bar 45 and the cylindrical support 40 is provided with a projection 46 forming a housing 47. A shaft 48 is journaled in a boss 49 formed on a cover 50 for said housing, and said shaft 48 projects into said housing 47 and is provided with a gear 52 arranged to directly engage the rack bar 45. The opposite end of the shaft 48 is provided with a worm wheel 54, and is adaptedto be driven by a worm 55 secured to one end of a controlshaft 56 which is journaled in a bracket arm 57 connected to and'extending radially from the cylindrical support 40. A manual control wheel 58 is secured to the shaft 56 and is provided with a manual control knob 59 to facilitate rotation ofthe shaft 56 and verticaladjustment of the cylindrical support 44. The control disc 58 .isprovided with a series of graduations 60 which are adaptedto register with a marking 61 on one of the clamping lugs 62 of the cylindrical support 40. The cylindrical support 40 is longitudinally slit from the upper end to a point intermediate its ends as at 62a, and clampmg lugs 62 are provided on opposite sides ofsaid slit 62a. A clamping screw 64 is passed through correspond ingly aligned openings in the lugs .62 with the threaded end of said screw received in the correspondingly threaded opening in the right hand clamping lug 62 looking at Figure 1. A lever 63 is attached to the screw 64 to facilitate turning thereof manually.

The upper end of the tubular support 44 is provided with an annular fiange 70 on which is supported an electric motor having a suitable cable (not shown) for connection. with a suitable source of electrical energy. The

motor casing 71 is supported on theflange 70 and is held in place by a series of circumferentially spaced machine screws 72 so that, the armature. shaft 73 of the motor is centered with respect to the tubular support, 44.

Mounted within the tubular support. 44 is a drive shaft, 75 which is supported by anti-friction bearing elernents, 76 adjacent the upper and lower ends of the tubu- 2:. suppor The ower end of the shaft 75 is ed a at 77 and the anti-friction bearings 76 at the lower portion of the tubular shaft are mounted in an enlarged bore 78 and held in place by means of a threaded retaining ring 79 received in the lower threaded end 80 of said tubular support 44.

A coupling member 81 is provided with collars 82 and 83 and the armature shaft 73 of the electric motor 71 is secured to the collar 82 of the coupling and held in place by means of a transverse pin 84. Similarly, the upper end of the shaft 75 is received in the collar 83 and locked thereto by means of a transversepin 85.

Secured to the lower reduced end 77 of the shaft 75 is the hub 89 of a grinding wheel .90. The hub 89 is provided with a disc 91 having a series of circumferentially spaced threaded openings 92 for receiving machine screws or the like 93 which pass through the backing plate 94 of the grinding wheel and thereby securely hold the grinding wheel 90 to the radial flange 91 of the hub 89'. The hub 89 is provided with a keyway corresponding in position to a keyway in the lower end of theshaft 75 for receivinga locking key 96. The locking key is held in place by means of a nut 97 received on the lower threaded end 98 of the shaft 75. Thus, the peripheral face 100 of the grinding wheel extends beyond the hub flange 91 and the radial face 101 of the grinding wheel is. presented in a plane parallel to the surface table 23.

A workpiece W may be supported on the surface plate 23 so that the head gasket surface of a cylinder block or the like will be presented to the radialsurface of the grinding wheel 90.

In operation, the workpieceW is supported on the surface plate and the grinding wheel 90 is adjusted by manipulating the handpiece 59 until the grinding wheel is in its correct position with respect to the workpiece. This adjustment may be made while the carriage is at one end of the base 5 and after the proper adjustment has been made, the grinding wheel 90 is locked in its adju sted position by operating the locking screw 64. Upon energization of the motor 71 the grinding wheel 90 will be rotated and the carriage 6 will be reciprocated above the workpiece by controlling a hand wheel 102 which is rotatably supported on one of the walls 13 and is provided with a sprocket wheel 104. The hand wheel 102 is rotatably supported on a'shaft 105 attached to the side plate 13, and said sprocket 104 is rigid with the hand wheel. A sprocket chain 106 is trained over the sprocket 104 and is 'drivingly connected to a sprocket wheel 107 attached to the short shaft 28 of the gear wheel 29. When the hand wheel 102 is rotated by the handle 110, the carriage 6 will be reciprocated to and fro in parallel relation with the bed plate 23.

The carriage bracket 14 is secured to the flangeslS of the side plates 13 by means of threaded fasteners such as machine bolts 111 (Fig. 1).

It will be seen that various gasket contact surfaces may be ground to a high degree of accuracy since the grinding wheel radial face is presented and moves in true parallel relation to the surface plate 23, and that various adjustments of the grinding wheel may be made by actuating the control knob 59 to raise and lower the grinding wheel with respect to the work. This adjustment may be accomplished from the front of. the machine readily accessible by the operator during his reciprocation of the carriage 6 by means of the hand wheel 110.

It is to be understood that the form of the invention herewith shown and described should be taken as a preferred. embodiment thereof, and various changes in the shape, size and arrangement of parts may beresorted to without departing from the spirit of the invention or the scope of the subjoined, claims.

What I claim is:

1. In a rotary surface grinder for resurfacing gasket sealing. surfaces of engine blocks and the like, a base forr'nedv of a. relatively heavy casting, guide ribs extending horizontally and removably secured to each outer side of said base, a carriage including a pair of side plates, a bracket connecting the upper ends of said side plates and extending above said base, said side plates being arranged to extend downwardly over the sides of said base to the lower portion thereof, anti-friction rollers carried by said side plates and arranged in pairs to engage the upper and lower surfaces of said guide ribs, a split cylindrical support mounted on said bracket, a tubular support slidably mounted in said bracket and movable through said cylin drical support, means for clamping said tubular support to said cylindrical support, a shaft journaled in said tubular support, a grinding wheel mounted on the lower end of said shaft and arranged beneath said bracket, an electric motor secured to the upper end of said tubular support and solely supported thereby with its armature shaft removably connected to said tubular support shaft, means for reciprocating said carriage including said side plates and bracket longitudinally of said base in a horizontal direction and means for reciprocating said tubular support above said base in a vertical direction.

2. In a surface grinder for resurfacing gasket sealing surfaces of engine blocks and the like, an elongated base formed of a relatively heavy casting, a surface plate on said base adapted to support a workpiece, guide ribs secured to the longitudinal sides of said base, a pair of vertically extending side plates arranged on each side of said base, a bracket connecting the upper ends of said side plates and extending above said base, anti-friction rollers carried by said side plates engageable with the upper and lower surfaces of said guide ribs, a split cylindrical support mounted on said bracket having its opening in alignment with a correspondingly shaped opening in said bracket, a tubular support slidably mounted in said cylindrical support, means for clamping said split cylindrical support into locking engagement with said tubular sup port, a shaft journaled in said tubular support and projecting below said bracket, a grinding wheel on the lower end of said shaft, an electric motor solely supported on the upper end of said cylindrical support with its armature shaft removably connected to said tubular support shaft, means for reciprocating said side plates and bracket in a horizontal direction along said base, and means for reciprocating said tubular support in a vertical direction.

3. In a surface grinder for resurfacing gasket sealing surfaces of engine blocks and the like, an elongated base formed of a relatively heavy casting, a surface plate on said base adapted to support a workpiece, guide ribs secured to the longitudinal sides of said base, a pair of vertically extending side plates arranged on each side of said base, a bracket connecting the upper ends of said side plates and extending above said base, anti-friction rollers carried by said side plates adjacent the ends thereof near the vertical edges engageable with the upper and lower surfaces of said guide ribs, a split cylindrical support mounted on said bracket having its opening in alignment with a correspondingly shaped opening in said bracket, a tubular support slidably mounted in said cylindrical support, means for clamping said split cylindrical support into locking engagement with said tubular support, a shaft journaled in said tubular support and projecting below said bracket, a grinding wheel on the lower end of said shaft, an electric motor solely supported on the upper end of said tubular support with its armature shaft removably connected to said tubular support shaft, a rack and gear drive for reciprocating said bracket and side plates in a horizontal direction, a manual control wheel mounted on one of said side plates for actuating said rack and gear drive, and a rack and gear drive for reciprocating said tubular support having a control knob operable from the same side of the machine as said rack and gear drive control wheel.

4. In a surface grinder for resurfacing gasket sealing surfaces of engine blocks and the like, an elongated base formed of a relatively heavy casting, a surface plate on said base adapted to support a workpiece, guide ribs secured to the longitudinal sides of said base below said surface plate, a pair of vertically extending side plates arranged on each side of said base, a bracket connecting the upper ends of said guide plates having a central opening, anti-friction rollers arranged in sets near the vertical edges of said side plates engageable with the upper and lower surfaces of said guide ribs, a split cylindrical support mounted on said bracket with its bore in registry with the opening in said bracket, a tubular support slidably mounted in said cylindrical support and arranged to extend above and below said bracket, means for clamping said split cylindrical support into locking engagement with said tubular support, a shaft journaled in said tubular support and projecting below said bracket, a grinding wheel on the lower end of said shaft, and an electric motor solely supported on the upper end of said tubular support with its armature shaft extending into said tubular support and removably connected to said shaft.

5. In a surface grinder for resurfacing gasket sealing surfaces, an elongated base formed of a relatively heavy casting, a surface plate on said base adapted to support a workpiece, guide ribs secured to the longitudinal sides of said base, a pair of vertically extending side plates arranged on each side of said base, a bracket connecting the upper ends of said side plates having a central opening, guides on said side plates engageable with the upper and lower surfaces of said guide ribs, a tubular support mounted on said bracket for vertical sliding movement relative thereto, a shaft journaled in said tubular support, a grinding wheel on the lower end of said shaft, an electric motor solely supported on the upper end of said tubular support with its armature shaft removably connected to said tubular support shaft, a rack and gear drive for reciprocating said tubular support, a control disc for said drive having a series of graduations around the peripheral edge thereof adapted to register with a marking on said bracket and a rack and gear drive for reciprocating said side plates and bracket in a horizontal direction above said surface plate, said graduated control disc being manually operable from the same side of the machine as said last-named rack and gear drive.

References Cited in the file of this patent Specht et al Aug. 23, 1938 2,539,107

Sectish Jan. 23, 1951 Borck July 27, 1937 

